Charge carrier dynamics investigation of CuInS2 quantum dots films using injected charge extraction by linearly increasing voltage (i-CELIV): the role of ZnS Shell

Research Paper
First Online:
Received:
Accepted:

Abstract

The role of ZnS shell on the photo-physical properties within CuInS2/ZnS quantum dots (QDs) is carefully studied in optoelectronic devices. Linearly increasing voltage technique has been employed to investigate the charge carrier dynamics of both CuInS2 and CuInS2/ZnS QDs films. This study shows that charge carriers follow a similar behavior of monomolecular recombination in this film, with their charge transfer rate correlates to the increase of applied voltage. It turns out that the ZnS shell could affect the carrier diffusion process through depressing the trapping states and would build up a potential barrier.

Keywords

CuInS2 Quantum dots I-CELIV (injected charge extraction by linearly increasing voltage) Charge recombination Optoelectronic devices 
This is a preview of subscription content, log in to check access.

Notes

Acknowledgments

This work was supported by the National Natural Science Foundation of China (No. 51502109, 21573094, 11274142, and 11474131), the Open Project of State Key Laboratory of Superhard Materials (Jilin University), the National Found for Fostering Talents of Basic Science (No. J1103202), and the Chinese Scholarship Council for providing financial support during visiting University of California at Irvine.

References

  1. Armin A, Velusamy M, Burn PL, Meredith P, Pivrikas A (2012) Injected charge extraction by linearly increasing voltage for bimolecular recombination studies in organic solar cells. Appl Phys Lett 101:083306Google Scholar
  2. Colvin VL, Schlamp MC, Alivisatos A (1994) Light-emitting diodes made from cadmium selenide nanocrystals and a semiconducting polymer. Nature 370:354–357CrossRefGoogle Scholar
  3. Kamat PV (2008) Quantum dot solar cells. Semiconductor nanocrystals as light harvestors. J Phys Chem 112:18737–18753Google Scholar
  4. Kazes M, Lewis DY, Ebenstein T, Mokari T, Banin U (2002) Lasing from semiconductor quantum rods in a cylindrical microcavity. Adv Mater 14:317–321CrossRefGoogle Scholar
  5. Li L, Pandey A, Werder DJ, Khanal BP, Pietryga JM, Klimov VI (2011) Efficient synthesis of highly luminescent copper indium sulfide-based Core/Shell nanocrystals with surprisingly long-lived emission. J Am Chem Soc 133:1176–1179CrossRefGoogle Scholar
  6. Maria A, Cyr PW, Klem EJ, Levina L, Sargent EH (2005) Solution-processed infrared photovoltaic devices with >10 % monochromatic internal quantum efficiency. Appl Phys Lett 87:213112–2131123CrossRefGoogle Scholar
  7. Nakamura H, Kato W, Uehara M, Nose K, Omata T, Matsuo OS, Miyazaki M, Maeda H (2006) Tunable photoluminescence wavelength of chalcopyrite CuInS2-based semiconductor nanocrystals synthesized in a colloidal system. Chem Mater 18:3330–3335CrossRefGoogle Scholar
  8. Pivrikas A, Juška G, Mozer AJ, Scharber M, Arlauskas K, Sariciftci NS, Stubb H, Österbacka R (2005) Bimolecular recombination coefficient as a sensitive testing parameter for low-mobility solar-cell materials. Phys Rev Lett 94:176806Google Scholar
  9. Qian C, Wang YH, Song YF, Zou L, Ma YG, Yang YQ, Zhang HZ (2014) Modulation of spontaneous emission characteristics of Alq3 in three-dimensional PMMA photonic crystals. J Polym Sci Part B Polym Phys 52:842–847CrossRefGoogle Scholar
  10. Robel I, Subramanian V, Kuno M, Kamat PV (2006) Quantum dot solar cells. Harvesting light energy with CdSe nanocrystals molecularly linked to mesoscopic TiO2 films. J Am Chem Soc 128:2385–2393CrossRefGoogle Scholar
  11. Rogach AL, Gaponik N, Lupton JM, Bertoni C, Gallardo DE, Dunn S, Pira NL, Paderi M, Eychmuller A (2008) Light-emitting diodes with semiconductor nanocrystals. Angew Chem 47:6538–6549CrossRefGoogle Scholar
  12. Tan Z, Zhang Y, Xie C, Su HP, Zhang CF, Dellas N, Mohney SE, Wang YQ, Wang JK, Xu J (2011) Near-band-edge electroluminescence from heavy-metal- free colloidal quantum dots. Adv Mater 23:3553–3558CrossRefGoogle Scholar
  13. Tessler N, Medveldev V, Kazes M, Kan SH, Banin U (2002) Efficient near-infrared polymer nanocrystal light-emitting diodes. Science 295:1506–1508CrossRefGoogle Scholar
  14. Xie BB, Hu BB, Jiang LF, Li G, Du ZL (2015) The phase transformation of CuInS2 from chalcopyrite to wurtzite. Nanoscale Res Lett:10–86Google Scholar
  15. Zhang WJ, Zhong XH (2011) Facile synthesis of ZnS CuInS2-alloyed nanocrystals for a color-tunable Fluorchrome and Photocatalyst. Inorg Chem 50(9):4065–4072CrossRefGoogle Scholar
  16. Zhong HZ, Zhou Y, Ye MF, He YJ, Ye JP, He C, Yang CH, Li YF (2008) Controlled synthesis and optical properties of colloidal ternary Chalcogenide CuInS2 nanocrystals. Chem Mater 20:6434–6443CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2016

Authors and Affiliations

  1. 1.Femtosecond Laser Laboratory, Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), College of PhysicsJilin UniversityChangchunPeople’s Republic of China
  2. 2.Department of ChemistryUniversity of CaliforniaIrvineUSA
  3. 3.Department of Chemical EngineeringUniversity of MichiganAnn ArborUSA
  4. 4.Key Laboratory of Superhard Materials, College of PhysicsJilin UniversityChangchunChina

Personalised recommendations